Amyloid β Protein Fragment 1-42 is extensively used in research focused on Alzheimer's disease. It plays a critical role in studying the formation of amyloid plaques, which are hallmark features of this neurodegenerative disorder. Researchers utilize this fragment to investigate the mechanisms of plaque accumulation, neuronal toxicity, and potential therapeutic interventions. It is also employed in developing and testing drugs aimed at inhibiting amyloid aggregation or promoting its clearance. Additionally, this protein fragment is used in creating animal models of Alzheimer's disease to better understand disease progression and evaluate treatment efficacy. Its application extends to biomarker studies, helping to identify early signs of the disease in clinical settings.